Tru Vue Conservation Clear Glass protects artwork from up to 99% of UV light rays reducing fading and preserving artwork for years longer than regular glass. Over time, indoor and outdoor ultraviolet rays take a toll on artwork and cause fading. Paper can become faded, discoloured, and brittle, causing irreversible damage that ruins the artwork. Tru Vue uses a proprietary coating process of microscopic, silica-based UV blocking agents that are cured onto the surface of a glass substrate to produce a superior glazing option. Blocks 99% of UV light 8% light reflection. Allows more than 89% light transmission.